Respirator-helmet.



F. E. JACKSON. RESPIRATOR HELMET.

APPLICATION FILED AUGJO'. 1917.

Patented May 28, 1918.

Invemor. Frederick E. Jackson byMSwsJ/ZWM @FFTQE.

FREDERICK EVANS JACKSON, OF CHORLTON-CUM-HABDY, ENGLAND.

RESPIRATOR-HELMET.

Specification of Letters Patent.

Patented May 28, 1918.

Application filed August 30, 1917. Serial N 0. 188,893.

To all whom it may concern:

Be it known that I, FREDERICK E. JACKSON, a subject of the King of Great Britain, residing at Chorlton-cum-Hardy, Manchester, England, have invented an Improvement in Respirator-Helmets, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like arts.

p This invention relates to helmets such as are worn over the head to protect the wearer from the efi'ects of smoke, gases, etc., and the object of the invention is to provide an improved helmet having a novel respirator attachment which is simple and inexpensive to manufacture and which is effective in its manner of protecting the wearer against the deleterious efiects of smoke, gas, etc.

In order to give an understanding of the invention, I have illustrated in the drawings, a selected embodiment thereof which will now be described, after which the novel features will be pointed out in the appended claims.

In the drawings, Figure 1 is a view showing my improved helmet in use;

Fig. 2 is a fragmentary view showing the interior of the front portion of the helmet;

Fig. 3 is a similar view showing the exterior of the front portion of the helmet;

Fig. 4 is a section on the line 44, Fig. 3;

Fig. 5 is a section on the line 55, Fig. 1.

The device comprises a helmet or hood member 1 which is adapted to be placed over the head of the wearer, said helmet member preferably having sufficient length so that it can be tied around the neck of the wearer if necessary. This hood member or helmet member may be made of any suitable material, but will preferably be formed of a pile fabric in which the pile of the fabric is in the form of loops. This pile fabric may be either single face or double face, but will preferably be a double-faced fabric, that is, one having the pile loops on both sides thereof. The advantage of using a pile fabric of this nature is that the pile' loops act in the nature of interceptory loops that give the fabric greater power of intercepting or stopping the passage of smoke, gases, etc.

The hood or helmet portion 1 is formed with a transparent portion in front through which the wearer may see. This transparent portion will preferably be made by forming an opening in the front of the helmet and then closing said opening with a sheet 2 of transparent material, such, for instance, as mica. The sheet of mica is shown as held in place by means of a frame 3 which is se- ,7

- present a double U formation in cross-section, that is, each strip is bent to form the U-shaped portion 5 in which the edge of the mica sheet 2 is received and isthen bent to form the oppositely-directed U-shaped portion 6 in which the edge of the opening in the hood 1 is received. These binding strips are secured to the hood and to the mica sheets by means of suitable rivets 7. In this way a joint between the transparent mica sheet 2 and the hood is provided which is not only gas-tight, but which is also strong and durable.

Associated with the hood element 1 is a respirator element in the form of an open ended tube 8 which is secured to the outside of the hood immediately below the sight opening. This tube 8 is shown as extending horizontally and the axis thereof is in a line parallel to the plane of the sight opening. The tube may be secured to the hood element in any suitable way without departing from the invention. I have herein illustrated a construction wherein the binding strip 4 at the bottom of the sight opening is provided with a depending extension or apron. 9 which overlies the inner face of the hood element below the sight opening. The tubular member 8 is secured to this apron 9 by means of rivets or screws 10 that pass through the intervening portion of the hood. 11 is a breathin tube which fits through the inner wall of t e tube 8 and through both the fabric of the hood 1 and the apron 9, the inner end of the breathing tube 11 being situated so that it can be inserted into the mouth of the wearer. This breathing tube will preferably be made of rubber which is flexible so that it can be easily bent to accommodate different positions of the head of the wearer. A suitable filtering element 12 is inserted into each end of the tube 8. This filtering element may be in the form of sponges or any other porous material through which air will freely pass. The filtering elements are situated at the ends of the tube 8, thus leaving a space 13 in the center thereof at the inner end of the breathing tube 11, so as to make breathing less diilicult.

In the illustrated einhodi rent of my in vention each filtering eleine-n is in the form of three sponges connected together.

in using the device the filtering pads or elements 12 will he moistened with or some chemical solution, dependent upon the character of the gas against which protection is desired.

Special attention is called to the position of the tube 8 which is so arranged that the open ends the sides. when the Where the v e the person i ng such circuin. noes the force oi the gases comes against the side of the tube and not against the open end thereof and there is, therefore less likelihood of the gases being carried through the respirator into the llS arrangement advantageoue 1 device 1.- being used in a location l. in a respirator helmet, thecemhination with a helmet -nemher having a sight open losure of transparent material thereion an apron depending from the sight 'Gopies of this patent may be attained for thereof are directed laterally or to" neevgeee opening and overlying the inside face of the helmet, anopeirended tubular member sitlar member to said depending apron, and ahreathing tube leading from the tubular member through the apron into the interior of the helmet. i V

in a respirator hehnet, the combination with a helmet member having a sight opening a frame inclosing said sight opening and secured to the helmet member, a closure of transparent material sustained by said frame, said frame having an apron depending from the sight opening and overlying the inside of the inner face of the helmet an open-ended tubular member situated on the outside of the helmet and arranged with its axis parallel. to the plane oi the sight opening, means securing said tubular member to said depending apron and a breathing tube leading from the tubular member through the apron into t 1e interior of the helmet.

In testimony whereof, I have signed my name to this specification.

FREDERICK EVANS JAGKSQN. 

